@article{SPHM_1989___2_A1_0,
     author = {Van Dalen, Dirk},
     title = {L'identit\'e en math\'ematiques constructives},
     journal = {S\'eminaire de Philosophie et Math\'ematiques},
     pages = {1--16},
     publisher = {IREM Paris-Nord},
     number = {2},
     year = {1989},
     language = {fr},
     url = {http://www.numdam.org/item/SPHM_1989___2_A1_0/}
}